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  <title>Sort entries using a &quot;natural order&quot; algorithm</title>
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  <div id="layout-content"><div id="arrayobject.natsort" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">ArrayObject::natsort</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.2.0, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">ArrayObject::natsort</span> &mdash; <span class="dc-title">Sort entries using a &quot;natural order&quot; algorithm</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-arrayobject.natsort-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>ArrayObject::natsort</strong></span>(): <span class="type">bool</span></div>

  <p class="para rdfs-comment">
   This method implements a sort algorithm that orders alphanumeric strings
  in the way a human being would while maintaining key/value associations.
   This is described as a &quot;natural ordering&quot;.  An example of the difference
   between this algorithm and the regular computer string sorting algorithms
   (used in <a href="arrayobject.asort.html" class="link">ArrayObject::asort</a>) method
   can be seen in the example below.
  </p>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
 <p class="para">
  如果两个成员完全相同，那么它们将保持原来的顺序。
  在 PHP 8.0.0 之前，它们在排序数组中的相对顺序是未定义的。
 </p>
</p></blockquote>

 </div>


 <div class="refsect1 parameters" id="refsect1-arrayobject.natsort-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-arrayobject.natsort-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   没有返回值。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-arrayobject.natsort-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-3741">
    <p><strong>示例 #1 <span class="function"><strong>ArrayObject::natsort()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$array&nbsp;</span><span style="color: #007700">=&nbsp;array(</span><span style="color: #DD0000">"img12.png"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"img10.png"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"img2.png"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"img1.png"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$arr1&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">ArrayObject</span><span style="color: #007700">(</span><span style="color: #0000BB">$array</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$arr2&nbsp;</span><span style="color: #007700">=&nbsp;clone&nbsp;</span><span style="color: #0000BB">$arr1</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$arr1</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">asort</span><span style="color: #007700">();<br />echo&nbsp;</span><span style="color: #DD0000">"Standard&nbsp;sorting\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$arr1</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$arr2</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">natsort</span><span style="color: #007700">();<br />echo&nbsp;</span><span style="color: #DD0000">"\nNatural&nbsp;order&nbsp;sorting\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$arr2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Standard sorting
ArrayObject Object
(
    [3] =&gt; img1.png
    [1] =&gt; img10.png
    [0] =&gt; img12.png
    [2] =&gt; img2.png
)

Natural order sorting
ArrayObject Object
(
    [3] =&gt; img1.png
    [2] =&gt; img2.png
    [1] =&gt; img10.png
    [0] =&gt; img12.png
)
</pre></div>
    </div>
    <div class="example-contents"><p>
     For more information see: Martin Pool&#039;s <a href="https://github.com/sourcefrog/natsort" class="link external">&raquo;&nbsp;Natural Order String Comparison</a>
     page.
    </p></div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-arrayobject.natsort-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="arrayobject.asort.html" class="methodname" rel="rdfs-seeAlso">ArrayObject::asort()</a> - Sort the entries by value</span></li>
    <li class="member"><span class="methodname"><a href="arrayobject.ksort.html" class="methodname" rel="rdfs-seeAlso">ArrayObject::ksort()</a> - Sort the entries by key</span></li>
    <li class="member"><span class="methodname"><a href="arrayobject.natcasesort.html" class="methodname" rel="rdfs-seeAlso">ArrayObject::natcasesort()</a> - Sort an array using a case insensitive &quot;natural order&quot; algorithm</span></li>
    <li class="member"><span class="methodname"><a href="arrayobject.uasort.html" class="methodname" rel="rdfs-seeAlso">ArrayObject::uasort()</a> - Sort the entries with a user-defined comparison function and maintain key association</span></li>
    <li class="member"><span class="methodname"><a href="arrayobject.uksort.html" class="methodname" rel="rdfs-seeAlso">ArrayObject::uksort()</a> - Sort the entries by keys using a user-defined comparison function</span></li>
    <li class="member"><span class="function"><a href="function.natsort.html" class="function" rel="rdfs-seeAlso">natsort()</a> - 用&ldquo;自然排序&rdquo;算法对数组排序</span></li>
   </ul>
  </p>
 </div>


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